Nothing the Dropbox client does that rsync can't do. Running even a NAS storage with remote backups and decent security is not trivial job. While UX/client fe

Nothing the Dropbox client does that rsync can't do. Running even a NAS storage with remote backups and decent security is not trivial job. While UX/client features is a factor for buying into Dropbox, the storage and backup costs are the primary cost driver.